I am trying to replace win2k server running NAT, with a RH9 Linux box using ip masq. I wanted to do this so I can allow or disallow connection based on mac addresses. The 2k server also runs dhcp and dns, dns for LAN addresses and forwards to my isp's dns (188.8.131.52) for other queries. The linux box was originally on the behind the 2k server. I ping "whatever".com from and get a reply. I was using my 2k server to answer all dns queries.
Now I have put the linux box on the cable modem and set eth1 (public) with dhcp. I restart the network services and ping my isp's dns (184.108.40.206) by ip and get a response. Now I ping google.com or whatever and get "unknown host, unable to resolve". /etc/resolv.conf shows 3 dns servers listed including the one that i can ping by ip (220.127.116.11). Ip masq. is set up correctly because I can ping 18.104.22.168 from any client on the network. Im almost there!!! Any help would be greatly appreciated. The dns is the only problem I have left...I hope.